Crystal glass nail file,foot file,manicure,pedicure,nail care 1.Size:optional 2.Color: has different bright color. 3.Material: Glass; 4.Package: each one or two in a poly bag. 5.Features:Ideal for shaping nails for manicures;Non-eroding filing surface, increased glass resistance due to hardening technology;High standard of hygiene, can be sterilized with liquid, heat and UV lightning,prevents spreading 6.Usage:Can be used on natural and artificial nails.Suitable for professional & personal used. Should you have interest, pls feel free to contact Eric Zheng. Your any request,I will give high attention and follow up promptly.